6
6
4
1 5
-8
If A = 7
-4
and B = | 9
-5 -8
find 3A + 9B.

456yup 89i28993728128828282 6r3235

664r5790

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

(-5,-28)

i graphed to on desmos.